Enclosed afferent reservoir breathing systems. Description and clinical evaluation
Date
1988
Authors
Miller D.M.
Miller J.C.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
A new group of breathing systems, namely the Enclosed Afferent Reservoir (EAR) systems, is described. They allow for the selective elimination of alveolar gas in association with both spontaneous and controlled ventilation. A comparison with the Bain system in controlled ventilation demonstrates greater efficiency in eliminating carbon dioxide. A fresh gas flow (̇VF) of 70 ml kg-1 min-1 using an EAR system gave mild hypocarbia which equated to a ̇VF of 100 ml kg-1 min-1 using the Bain system. Smaller minute volumes of ventilation are required for optimal performance than with the Bain system. The minimum recommended minute volume of ventilation (̇Vl) should equal ̇VF plus anatomical deadspace ventilation (̇VD(anat)). The pattern of ventilation appears to have little influence upon the efficiency of carbon dioxide elimination when using an EAR system, whereas the Brain system does appear to be affected.
Description
Keywords
clinical article, gas flow, human, inhalation anesthesia, inhalational drug administration, nonbiological model, tidal volume, Anesthesia, General, Carbon Dioxide, Comparative Study, Equipment Design, Evaluation Studies, Female, Human, Partial Pressure, Respiration, Artificial, Support, Non-U.S. Gov't, Tidal Volume, Ventilators, Mechanical
Citation
British Journal of Anaesthesia
60
4
60
4